| 摘要 |
<p>A mixed-flow impeller pump, which may be used, for example, as a primary pump for circulating sodium as the primary coolant in a fast nuclear reactor, comprises an impeller (1) with evenly-spaced blades (A, B, C, E, F, G). Some of the blades (A, B, C), which are symmetrically disposed around the axis of rotation of the impeller (1), extend beyond the ends of the other blades (E,F,G) towards the suction side of the pump to form an inducer (2). The channels defined between the extensions of the extended blades (A,B,C) follow helical paths parallel to the axis of rotation. The leading edges of the unextended blades (E,F,G) are interposed between the extended blades (A,B,C) in the region (3) of divergence of flow from the axis of rotation.</p> |
